kernel panic at kern/src/atomic.c:98, from core 1: assertion failed: spin_locked(lock)
Stack Backtrace on Core 1:
#01 [<0xffffffffc200a3ac>] in backtrace at src/kdebug.c:229
#02 [<0xffffffffc2009b3d>] in _panic at src/init.c:268
#03 [<0xffffffffc2003a85>] in spin_unlock at src/atomic.c:98
#04 [<     [inline]     >] in cv_unlock at src/kthread.c:716
#04 [<0xffffffffc200c755>] in cv_unlock_irqsave at src/kthread.c:727
#05 [<0xffffffffc200003c>] in __finish_awaiter at src/alarm.c:137
#06 [<     [inline]     >] in wake_awaiter at src/alarm.c:153
#06 [<0xffffffffc2000478>] in __trigger_tchain at src/alarm.c:191
#07 [<0xffffffffc205a985>] in timer_interrupt at src/time.c:50
#08 [<0xffffffffc20ab022>] in irq_dispatch at arch/x86/trap.c:718
#09 [<0xffffffffc20ab9ba>] in handle_irq at arch/x86/trap.c:752
kernel panic at kern/src/kthread.c:370, from core 0: Kthread tried to sleep, with lockdepth -1
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a3ac>] in backtrace at src/kdebug.c:229
#02 [<0xffffffffc2009b3d>] in _panic at src/init.c:268
#03 [<0xffffffffc200c0e7>] in sem_down at src/kthread.c:370
#04 [<0xffffffffc200c7d8>] in cv_wait_and_unlock at src/kthread.c:756
#05 [<0xffffffffc200c7f1>] in cv_wait at src/kthread.c:763
#06 [<0xffffffffc2050055>] in rendez_sleep_timeout at src/rendez.c:109
#07 [<0xffffffffc200bc28>] in kthread_usleep at src/kthread.c:254
#08 [<0xffffffffc2056acc>] in sys_block at src/syscall.c:621
#09 [<0xffffffffc2059f59>] in syscall at src/syscall.c:2465
#10 [<0xffffffffc205a124>] in run_local_syscall at src/syscall.c:2500
#11 [<0xffffffffc205a659>] in prep_syscalls at src/syscall.c:2520
#12 [<0xffffffffc20ac12a>] in sysenter_callwrapper at arch/x86/trap.c:854